Adventure in Grand Canyon National Park: A Mystery Adventure (National Park Mystery Series)
Danger in Zion National Park: A Mystery Adventure (National Park Mystery Series)
Discovery in Great Sand Dunes National Park: A Mystery Adventure (National Park Mystery Series)
Quest in Yosemite National Park: A Mystery Adventure (National Park Mystery Series)
Shadows of Serenity: A Gripping Cozy Mystery Set in Thailand (A Harry Sinclair Cozy Travel Mystery)
Mountain House: Studies in Elevated Design
